Kip Thorne discussed with Narayana Murthy on why and how pure sciences could be encouraged in India, his work with filmmaker Christopher Nolan, and who among Amazon’s Jeff Bezos or SpaceX’s Elon Musk is likely to win the race to Mars

The explanation from Jeff Bezos has been that people who use the Prime internet video service tend to stick with the shopping club, and become paying members after free trial offers, at a higher rate than people who don't watch Amazon internet video.

In the run-up to the grand finale of the ET Startup Awards 2017, your favourite newspaper presents a special series on the lessons that some of India's most celebrated entrepreneurs have learnt from their mentors

Indian users had reason to cheer as the company again indicated that India will be its biggest focus outside North America and also talked of investments in Echo devices and the Alexa platform for India.